%0 Journal Article
%A Ferreira, Gilda
%A Oitavem, Isabel
%T An interpretation of  in -NIA.
%J Portugaliae mathematica
%D 2006
%P 427-450
%V 63
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_2006__63_4_53547/
%G en
%F PORMA_2006__63_4_53547